High Efficiency Speaker Asylum

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RE: Beamy?

Posted by Inmate51 on December 21, 2016 at 10:01:48:
"Since the tweeter will aim all frequencies straight ahead whose wavelength is smaller than the tweeter's diameter, I have wondered why you wouldn't have to aim any supertweeter directly (horizontally & vertically) at the corresponding ear to even receive the higher frequency sounds at all."
You're referring to theory. Harry Olson, in "Acoustical Engineering", described this. However, that isn't how it works in reality. Other factors come into play. Olson also noted this.
With regard to tweeters being "aimed" off-axis, this may be an attempt to improve the direct and/or ambient soundfield in some rooms with some speaker/room combinations.
Hope this helps.
:)